Less than six months after installing
a new L75RS regulated speed
compressor with heat recovery from
CompAir, Leeds-based Just Trays, a
manufacturer of shower trays, is on
target to achieve annual energy
savings in the region of £23,000, with
a fast payback on investment.

Ricky Dumbleton, senior
production manager, says: “Based on
the results of a week-long air audit,
we asked a number of compressed
air suppliers to put forward their
recommendations. CompAir
identified that, by installing a new,
lubricated screw L75RS regulated
speed compressor, as well as a heat
recovery system, we could benefit
from considerable energy savings.

“Working 10h/day, 4 days/week,
the regulated speed technology in
the L75RS produces the correct
amount of air to match fluctuating
requirements and a peak demand of
about 12.5m3/min, so the compressor
always runs at optimum efficiency.

This is set to provide cost savings in
the region of £15,000 per annum.”
Just Trays’ vacuum forming
process needed four 9kW heat
exchangers to achieve water
temperature to 90°C. The heat
recovery system installed by
CompAir enables the water feed to
be preheated, so now just one heat
exchanger is required, saving a
further £7000 per annum.